Recent Progress in Aerodynamic Design of Axial-Flow Compressors in the United States

This paper reviews recent trends in the United States in the aerodynamic design of axial-flow compressor components. A summary of design procedures used prior to 1955 is followed by discussion of subsequent improvements in the flow model, the velocity-diagram selection problem and methods for the selection or design of optimum blading. Recent investigations concerned with off-design performance, Reynolds number, scale and blade aspect ratio, and the influence that these investigations have had on design technique are considered. In conclusion, some important current problems in the design of axial-flow compressors are outlined.